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Anatomy and Physiology > Chapter 6 Muscles > Flashcards

Chapter 6 Muscles Flashcards

1
Q

Biceps Brachii

A

Supinates forearm, flexes elbom

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2
Q

Brachialis

A

elbow flexion

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3
Q

Brachioradialis

A

elbow flexion (weak muscle)

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4
Q

Triceps brachii

A

extends elbow (antagonist to biceps brachii)

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5
Q

Flexor Carpi

A

wrist flexion

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6
Q

Extensor carpi

A

wrist extension

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7
Q

Flexor digitorum

A

finger flexion

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8
Q

extensor digitorum

A

finger extension

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9
Q

Gluteus Maximus

A

Hip extension

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10
Q

Gluteus medius

A

hip abduction (steadies pelvis when walking)

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11
Q

Ilopsoas

A

Hip flexion (keeps the upper body from falling backwards when standing erect

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12
Q

Hamstring Muscles

A

thigh extensions and knee flexion

  • Biceps Femoris
  • Semimembranosus
  • Semitendinosus
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13
Q

Saritorius

A

flexes the thigh

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14
Q

Quadricep Muscles

A

extends the knee

  • rectus femoris
  • vastus muscles (lateralis, medialis, intermedius)
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15
Q

Tibialis anterior

A

dorsiflexion and foot inversion

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16
Q

Extensor digitorum longus

A

toe extension and dorsiflexion of the foot

17
Q

Fibularis muscles

A

plantar flexion and foot eversion

18
Q

Soleus

A

plantar flexion

19
Q

Frontalis

A

raises eyebrows

20
Q

orbiularis oculi

A

closes eyes, squints, blinks, winks

21
Q

orbicularis oris

A

closes mouth and protrudes the lips (smooches)

22
Q

buccinator

A

flattens the cheek, chews

23
Q

Zygomaticus

A

raises corners of the mouth

24
Q

Masseter

A

closes the jaw and elevates mandible; chews

25
Q

Temporalis

A

synergist of the masseter, closes jaw; chews.

26
Q

Platysma

A

pulls the corners of the mouth inferiorly (frown)

27
Q

Sternocleidoastoid

A

flexes the neck, rotates the head

28
Q

Trapezius

A

elevates, depresses, adducts, and stabilizes the scapula (posterior)

29
Q

Latissimus dorsi

A

extends and adducts the humerus (posterior)

30
Q

Erector spinae

A

back extension (posterior)

31
Q

Quadratus lumborum

A

flexes the spine laterally (posterior)

32
Q

Deltoid

A

arm adduction (posterior)

33
Q

Muscles that arise from the shoulder girdle and cross the shoulder joint to insert into the humerus

A

Pectoralis major
Latissimus dorsi
deltoid

34
Q

Pectoralis major

A

adducts and flexes the humerus

35
Q

Intercostal muscles

A
  • eternal intercostals–raise rib cage during inhalation

* Internal intercostals–depress the rib

36
Q

Rectus abdominis

A

flexes vertebral column and compresses abdominal contents

37
Q

external oblique

A

flex vertebral column; rotate trunk and bend it laterally

38
Q

internal oblique

A

flex vertebral column; rotate the trunk and bend it laterally

39
Q

Transversus abdominis

A

compresses abdominal contents

Anatomy and Physiology (7 decks)

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